The water status of pear (Pyrus communis L.) under application of regulated deficit irrigation in high tropical latitudinal conditions

Vélez-Sánchez, Javier Enrique; Balaguera-López, Helber Enrique; Hernández, Pedro Hernández

doi:10.1016/j.jssas.2021.12.003

Cited by 4 publications

(2 citation statements)

References 43 publications

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“…These values were 2.32, 2.42 and 2.33 times higher than the water potential of the leaf at dawn (Ψld) and 2.31, 2.15 and 2.23 times higher than the water potential of the leaf at solar noon (Ψln), respectively, as was also found by [43]. This allowed us to infer that Ψfd may be less sensitive to environmental conditions than Ψs, possibly because fruits are organs composed of different types of tissues and the movement of water through them takes place mainly via non-vascular pathways [42], while (Ψs) is more sensitive to changes in water availability in the soil, which makes it a good parameter for irrigation scheduling [44].…”

Section: Fruit and Stem Water Potentialsupporting

confidence: 61%

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Vélez-Sánchez,

Casierra-Posada,

Fischer

2023

Sustainability

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The irrigation of crops represents 70% of the world’s water use. For crops grown in high-altitude tropical climates, due to the decrease in rainfall with increasing altitude, along with the effects of global warming, it is necessary to propose alternatives for sustainable fruit production with reduced water consumption. This study was carried out in Sesquilé, Colombia (South America), at an altitude of 2595 m a.s.l. for two successive years with pear trees, var. Triunfo de Viena. The objective of this work was to determine the effect of regulated deficit irrigation (RDI) on the absolute and relative growth rates of the equatorial diameter of the fruits, the fresh and dry weights, the number of fruits, the yield per tree and the water potential of the fruits. In 2014, during the rapid growth phase of the fruit, one group of plants was irrigated at 100% of the crop evapotranspiration (ETc) (control), another at 74% and a third group at 60%. In 2015, the three groups were irrigated at 100%, 48% and 27% of the ETc. The use of RDI did not significantly affect the growth of the fruits. This study showed that the ‘Triunfo de Viena’ pear tree not only has sufficient adaptive reserves, but also has good ecological plasticity under water stress conditions in high-altitude tropical climates. In cases where water is a limiting factor for pear tree production, RDI can obtain production rates similar to those of a regularly irrigated crop, as long as this technique is used and implemented in phenological states of low sensitivity to water stress without exceeding the tolerance limits of the plants to the stressor.

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Section: Fruit and Stem Water Potentialsupporting

confidence: 61%

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Vélez-Sánchez,

Casierra-Posada,

Fischer

2023

Sustainability

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“…According to the variables that contribute to the determination of gas exchange, the lower the water availability, the lower the flow from the root to the shoot, the lower the volume of water that reaches the leaves, and consequently the lower the stomatal opening, transpiration and photosynthesis, leading to the decrease of WUEi, so plants suffer from water stress (Oliveira et al, 2020;Vélez-Sánchez et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Production, gas and biochemical exchanges in pear cultivated in semi-arid region under different irrigation managements

Gomes

Simões

Silva

et al. 2023

Rev. bras. eng. agríc. ambient.

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The objective of this study was to evaluate the influence of irrigation systems and water depths on physiological, biochemical and production processes of pear trees grown in the Brazilian semi-arid region. The experimental design was randomized blocks, with 2 × 4 factorial scheme, corresponding to two irrigation systems (drip and microsprinkler) and four irrigation depths (60, 80, 100 and 120% of the crop evapotranspiration - ETc), with four replicates. Water deficit and excess applied to plants are harmful to gas exchange as well as to biosynthesis and accumulation of carbohydrates, amino acids and proteins in leaves, compromising the cultivation cycle of pear plants grown in the Sub-Middle São Francisco region. The irrigation depth of 91.8% ETc promotes the highest production of pear (18.49 kg plant-1) under drip and microsprinkler irrigation systems, under the edaphoclimatic conditions of the Sub-Middle São Francisco region.

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A biophysical model of apple (Malus domestica Borkh.) and pear (Pyrus communis L.) fruit growth

Dequeker,

Šalagovič,

Retta

et al. 2024

Biosystems Engineering

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The water status of pear (Pyrus communis L.) under application of regulated deficit irrigation in high tropical latitudinal conditions

Cited by 4 publications

References 43 publications

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Production, gas and biochemical exchanges in pear cultivated in semi-arid region under different irrigation managements

A biophysical model of apple (Malus domestica Borkh.) and pear (Pyrus communis L.) fruit growth

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